Cutting-tool.



H. S. WILLIAMS.

I cunms Tool. APPLICATION FILED MAR- 29, l9l6- Patented De a. 18,1917:

Wilma UNIT D STAT rarnn'r c arion] HARRY S,

wILmAMs or srnmerrnnnyonio, assrenon TO' THE RIDGELY TRIMMER oo rANY, orsrn nerlntn, OHIO, A CORPORATION or-onro;

CUTTIN -Toot:

1 ,a-sp me e t temz P aten'ted nee-18,1917.

Application filed March29, 1916. seria n sassa. g

To all whom it may concern:

Be it known that I, HARRY S. WILLIAws, a citizen of the United States,residing at Springfield, in the county of Clark and State of Ohio, haveinvented certain new and useful Improvements in Cutting-Tools, of

which the following is a specification.

My invention relates to improvements in cutting tools particularlyadapted for trimming wall paper.

An object of the invention is to simplify and cheapen the constructionof tools of this character and to make more efiective the operationthereof.

A further and more particular object of the invention is to improve theconstruction of the cutting element proper by providing a cutting bladewhich may be more cheaply renewed and in which rotating parts areeliminated so as to reduce wear.

In the accompanying drawings Figure 1 is a side elevation of a toolembodying my improvements.

Fig. 2 is an end elevation of the same.

Fig. 3 is a top plan View.

Fig. 4 is a side elevation.

Fig. 5 is a section on the line 55 of Fig. 1.

Fig. 6 is a section on the line.66 of Fig. 3, the straight edge,however, being omitted.

Referring to the drawings, 1 represents the bottom of a carriage or gagepiece, the under side of which is provided with the usual groovedprojections 2 which receive the overhanging metallic strip 3 of thestraight edge 4, and also with the downwardly projecting lips 5 whichengage the side of the straight edge; this being the usual and wellknown construction in tools of this character. The bottom portion 1 isprovided with an upwardly extending rounded block 6 which is providedwith a vertically extending Tshaped guideway 7 into which leads aslotted opening 8.

Slidably connected with the carriage thus formed is a tool carrying head9 which is in the nature of a housing w thin which is secured thecutting blade. In the present case this blade, which is in the nature ofa fiat strip of steel 10 is secured toa block 11 by a screw 12 as shownin Fig.6; a reinforcing strip 13 being preferably secured to the bladeby spot welding, soldering or otherwise. The block 11 is fastened to thehead in a way ,tobe readily removable, In the present case,

claim r I- loyed a screw 14 which extends through the upper portion ofthe head 9 into an extension 1190f the block 11 and a'screw 15 alsoextends through the block 11, blade 10 and its plate 13 upon the innerend of which is threaded a sleeve 16 which fits snugly but removably.into the hollow boss 17, thus not only assisting the screw 14 to firmlysecure the block 11 to the head 9 but also more firmly clamping theblade to the block. The block 11 is of a shape .to fit the T-shapedgroove in the part 6 so as to slidably connect it therewith, thecarriage being also provided with vertically arranged beveled ribs, asindicated at 18, to inclose the beveled side of the head to furtherassist the guiding action of the block. A spring 19 i inserted betweenthe under side of the block 11 and the bottom of the groove 7' sowardly; a screw 20 secured to the block 11 and extending through theslot 8 acting as a I stop.

In operation the tool is placed upon the straight edge and the operatormay then by hooking his forefinger under the boss 17 and pressing downupon the head 9 atthe thumb place 9*, force the blade 10 in contact withthe paper to be cut and slide the tool along the straight edge.I-Ieretofore in tools of this ting blade from wear on the cutting edgethereof, this can be done much more cheaply, since the cost between thetwo types is quite material. By reason of the peculiar shape of thecutting edge of the blade 10, which is curved upwardly in a forwarddirection, I am enabled to obtain in effect a draw out which is muchmore effective in its severing operation than the action of therotating'disk.

Having thus described my invention, I

1. In acutting tool, a carriage arranged to slide along a straight edge,a head slide a removable non-rotatable cutting blade con-. nected Withsaid block, the cutting edge of nected with said block. Said blade beingcurved upwardly in a direo- 19 2. In a cutting tool, a carriage arrangedto tion of travel of said tool.

slide along a straight edge,-a head slidably In testimony whereof, Ihave hereunto set connected with said carriage, a block removmy handthis 20th day of March, 1916.

ably secured to said head also having a slid- HARRY S. WILLIAMS. ableconnection with said carriage, and a rel/Vitness: movable non-rotatablecutting blade con- CHAs. I. WELCH.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

